CN101180782A

CN101180782A - Electric motor and method of producing electric motor

Info

Publication number: CN101180782A
Application number: CNA2006800180351A
Authority: CN
Inventors: 细井启一; 横尾次男; 岩田正人
Original assignee: Mitsuba Electric Manufacturing Co Ltd
Current assignee: Mitsuba Corp
Priority date: 2005-05-25
Filing date: 2006-05-19
Publication date: 2008-05-14
Also published as: US20090015082A1; WO2006126458A1; US7898125B2; JPWO2006126458A1; JP4876072B2

Abstract

In a fan motor (1) for a vehicle, an opening of an airflow hole (11) in a tubular bottom section (2a) of a yoke (2) that forms the fan motor (1) is formed so as not to be visible in a front view of the airflow hole (11). The airflow hole (11) is segmented to an upper half (12) and a lower half (13) by a laterally long segmentation line (X) having a mountain-like shape whose center part in its left-right direction enters into the upper half (12) side. The upper half (12) is formed in a spherical shape and protrudes outward from a bottom surface as it nears the lower side. As a result, the upper and lower halves (12, 13) are shifted from each other inward and outward.

Description

The manufacture method of electro-motor and electro-motor

Technical field

The present invention belongs to the technical field of radiator fan with the electro-motor of electro-motor etc.

Background technology

In general, in this electro-motor, the electro-motor that offers the air vent hole that is used to improve cooling effect on the tube bottom that is the yoke that the round-ended cylinder shape is arranged is arranged, but at this air vent hole the occasion of the simple opening that forms with punchings such as punching presses, the problem that exists the water of rainwater etc. to enter motor inside from this opening.

Improve countermeasure as this such invention is arranged, promptly, air vent hole is formed in slotted hole long on the left and right directions, and make and make the upside long leg outstanding and make the downside long leg sink to the inside and outside decussate structure of housing inboard, the upside long leg prevent that as protecting shape sealing is from outside immersion (with reference to patent documentation 1) to hull outside.

Patent documentation 1: TOHKEMY 2003-9456 communique

But, as above-mentioned existing invention, the long leg up and down of air vent hole forms inside and outside staggered and present and protect structure, when this air vent hole is watched in the front, in fact the slotted hole that has opening, and this slotted hole becomes big owing to make the aperture area of inside and outside staggered and feasible reality, its result, not only water proofing property is still not good, and, can produce the cutting bits in order to form air vent hole, need the punch process that stamping-out is processed and such two operations are processed in the shaping of long leg up and down of slotted hole, the problem that has the operation variation, this problem to be solved by this invention just.

Summary of the invention

The present invention is that purpose is made to solve such problem In view of the foregoing, the invention of technical scheme 1 is a kind of electro-motor, this electro-motor offers the air vent hole that is used for by cooling air on the tube bottom that is the yoke that the round-ended cylinder shape is arranged, it is characterized in that, described air vent hole forms in the following way, that is, the first half of this air vent hole at the bottom of the tube outside bulging ground cut off elongation laterally with respect to Lower Half.

The invention of technical scheme 2 is characterized in that on the basis of technical scheme 1 cut-off rule that air vent hole is grown is in the horizontal cut apart, make bulging outside the first half of this air vent hole is at the bottom of the tube and and Lower Half between form inside and outside staggered.

The invention of technical scheme 3 is characterized in that on the basis of technical scheme 1 or 2, and the first half forms more by downside more to the ball shape of the outside of bottom surface bulging.

The invention of technical scheme 4 is characterized in that on the basis of

technical scheme

2 or 3 cut-off rule is the chevron shape that the left and right directions central portion enters into first half side.

The invention of technical scheme 5 is manufacture methods of a kind of electro-motor, this electro-motor offers the air vent hole that is used for by cooling air at the tube bottom that is the yoke that the round-ended cylinder shape is arranged, it is characterized in that, the first half by making this air vent hole at the bottom of the tube outside bulging ground cut off elongation laterally with respect to Lower Half, thereby form described air vent hole.

The invention effect

According to the invention of technical scheme 1 or 5, the first half that air vent hole forms air vent hole is positioned at the outside and Lower Half is positioned at inboard staggeredly, can improve water proofing property.

According to the invention of technical scheme 2, form inside and outside staggered result as cutting apart along cut-off rule long on left and right directions, when air vent hole is watched in the front, can as prior art, can not see slotted hole, can improve water proofing property.

According to the invention of technical scheme 3,, can guarantee sufficient breathing area simultaneously by forming air vent hole cutting apart of cut-off rule.

According to the invention of technical scheme 4, under the state flow that will can guide with limit, the left and right sides portion that is tilted, can further improve water proofing property from the water that the big left and right directions central portion of breathing area flows down.

Description of drawings

Fig. 1 is the cross sectional side view of the part of electro-motor.

Fig. 2 is the front view of electro-motor.

Fig. 3 is the profile end view of the part of yoke.

(A) of Fig. 4 is the front view of air vent hole, (B) is the Y-Y profile of (A), (C) is the Z-Z profile of (A).

Description of reference numerals

1 electro-motor

2 yokes

The 2a tube bottom

11 air vent holes

12 first halves

13 Lower Halves

The X cut-off rule

Embodiment

Below, based on accompanying drawing embodiments of the present invention are described.In the drawings, the electro-motor that Reference numeral 1 is used for radiator fan, this electro-motor 1 utilizes and constitutes as lower member: yoke 2, this yoke 2 are made the round-ended cylinder shape that has described later; End frame 3, the opening of these end frame 3 inaccessible these yokes 2; Armature mandrel 5, this armature mandrel 5 via bearing 4,4a freely to rotate the axle be bearing in yoke tube bottom 2a and the end frame 3 between; Armature core 6, this armature core 6 are fixed on this armature mandrel 5; Coil 7, this coil 7 are wrapped on this armature core 6; Permanent magnet 8, this permanent magnet 8 are fixed on the inboard of facial 2b of yoke week; And then be various parts such as commutator 9, brush 10.These formations all are existing formations.

In described yoke tube bottom 2a, air vent hole 11 of the invention process is a plurality of so that described armature mandrel 5 is formed with on the axle circumferential direction diffusedly as the state in axle center, and these air vent holes 11 form as following.

Air vent hole 11 is formed on in the gap between the downside long leg of the upside long leg of the long first half 12 of cutting apart (cutting off) setting down of left and right directions and Lower Half 13 in form, wherein, the cut-off rule X-shaped that is used to form this air vent hole 11 becomes the chevron shape, in this chevron shape, be horizontal line (horizontal line) shape ground and form the described left and right directions center edge 12a of portion of long leg up and down, the position of 13a enters the first half 12 sides, form the 12b of the right and left portion of long leg up and down, the position of 13b is oblique towards the then downward more inclination of end side more, the first half 12 that is partitioned into the state along this cut-off rule X is then to form ball (bowl) shape to the mode of the outside bulging of yoke tube bottom 2a more by downside more, Lower Half 13 is slightly towards the inboard of yoke tube bottom 2a, and form inside and outside staggered state by upside more with then sinking to more, cutting apart shaping and can be stretched to outside ground and form like this by the first half 12 be cut off with respect to Lower Half 13, thus can be undertaken by the punch process that cutting bits not produce.

In the embodiments of the present invention that constitute like that as described, air vent hole 11 cuts off elongation by the first half 12 with respect to Lower Half 13 outside lower side and forms, with cut-off rule X long on left and right directions is the boundary, the first half 12 that is formed on the upside of this cut-off rule X becomes the state of bulging outside at the bottom of the tube more than yoke tube bottom 2a, staggered in being split into outward with respect to Lower Half 13, and, when image pattern 2 such fronts are watched, cannot see air vent hole 11, form the state that to see cut-off rule X merely.Therefore, when air vent hole 11 is watched in the front, thus can be visual when can be as prior art the opening of excision merely not being made for inside and outside staggered front and watching to opening self, as its result, can realize the raising of water proofing property.And, air vent hole 11 is by cutting off elongation with respect to Lower Half 13 with the first half 12 outside lower side, can carry out cutting apart and the processing of the first half 12, Lower Half 13 of cut-off rule X place, do not produce smear metal owing to offer opening, so can make with a punch process, operation is improved.

And according to such parts, the first half 12 of bulging outside at the bottom of the tube forms more by downside then more from the ball shape of tube bottom 2a bulging laterally, so can also can guarantee sufficient breathing area simultaneously by forming air vent hole cutting apart of cut-off rule X.

In addition, cut-off rule is the chevron shape that the left and right directions central portion enters into the first half 12 sides, so under the state flow that will can guide with limit, the left and right sides portion of being tilted, can further improve water proofing property from the water that the big left and right directions central portion of breathing area flows down.

In addition, the present invention is not limited to above-mentioned execution mode, the bulging shape of the first half can not be a ball shape, but implemented with suitable shapes such as capitate shapes, in addition, sink to the inside though preferred Lower Half is compared a bottom surface, this is not essential, in a word, and if the first half between form inside and outside staggered.

Industrial applicibility

The present invention is useful to radiator fan with electro-motors such as electro-motors, for being There is the tube bottom of the yoke of round-ended cylinder shape to offer electronic be used to the passage that cooling effect is improved Motor, by this passage is offered into the upper portion in the outside and lower portion in the friendship of inboard Wrong shape, thus can guarantee sufficient breathing area, and, can improve water proofing property, and then, Can simplify the formation operation of passage.

Claims

1. electro-motor, this electro-motor offers the air vent hole that is used for by cooling air on the tube bottom that is the yoke that the round-ended cylinder shape is arranged, it is characterized in that, described air vent hole forms in the following way, that is, the first half of this air vent hole at the bottom of the tube outside bulging ground cut off elongation laterally with respect to Lower Half.

2. electro-motor as claimed in claim 1 is characterized in that the cut-off rule that air vent hole is grown is in the horizontal cut apart, make bulging outside the first half of this air vent hole is at the bottom of the tube and and Lower Half between form inside and outside staggered.

3. electro-motor as claimed in claim 1 or 2 is characterized in that, the first half forms more by downside more to the ball shape of the outside of bottom surface bulging.

4. as claim 2 or 3 described electro-motors, it is characterized in that cut-off rule is the chevron shape that the left and right directions central portion enters into first half side.

5. the manufacture method of an electro-motor, this electro-motor offers the air vent hole that is used for by cooling air at the tube bottom that is the yoke that the round-ended cylinder shape is arranged, it is characterized in that, the first half by making this air vent hole at the bottom of the tube outside bulging ground cut off elongation laterally with respect to Lower Half, thereby form described air vent hole.